Piston.



.l J. MiCKLEY,

HsToN.

APPLICATION FILED ALIGN, 1915.

1,173,727., Patented Feb.29,1916.

( 'ATTORNEYS tion.

f' Referri Ui 111315 'STATES rArENT oFFIoE-,

I ALBERT J. MIcKiEY, or NEW Yonx, N. it.

PISTON.

animation inea August To all. whom it. may concern Be it known that I, 'ALBERT J.- MICKLEY, 'a citizen of the United States, residin in --the cityA and county and State of ew York, have invented a new anduseful Pis-A ton, of which the following is a specifica- -My invention consists of means for steadying or'centering a pistonI in its cylinder, and also for preventing leakage of the ring of a piston'at the joints thereof, the same `l embodying` a seal or sealing member in`which the end portions of a ring are .slidingly received *and embraced and so closing the "joint of the ends of the ring, or the sections thereof, and a resilient device ad'a-pted to force said seal firmly againstfthe cylinder wa ls and the rings andso hold the latter, especially at their joint,

tightly againstthe cylinder in which the piston is operative, thus also'preserving the closed joint ofthe ring when the latter expands or contracts,

y The invention issatisfactorily.illustrated in'y the accompanying drawing, but the-important instrumentalities thereof. may be varied, as long as, they are included in the scope of the claims. y l

Figure '-1 represents aside elevation of a portion of the'piston embodying my invention includinga longitudinal portion of the cylinder thereof. Fig. 2 represents a section thereof on the yline w-m Fig. 1. Fig. 3 represents a section thereof on the line y-fy` Fig. 2. Fig. 4 representsasection similar to Fig. 3, (omitting the cylinder) with seal and ring in expanded position. Fig. 5 represents a side elevation. of a portion o the piston, the ring, seal and springY havingeen removed therefrom. Fi 6 represen s a perspective view of one o the seals and the terminal. portions of the .con- Itained lring. Fig. 7 represents a perspective vlew of one of the springs or resillent spective view of 4 another form of the vseal employed. Similar numerals of reference indicate correspondingparts in the figures.

l to `th-drawings, 1

` thehead o f a piston, the same excepting the vfeatures of my invention applied 'thereto being of known construction. The grooves y 2 between the flanges 2 A "55. head are occupied by therpiston r1ngs 1, ;he4

terminals of each-fof Whdl devices employed. Fig. 8 represents a per-v designates of the sides of Said' V Specification of Letters I Patent. f lPatented b. 29; 1916.

s, 1915. vsemi ng. 43,967.

the blocks l1,"which-are intended to seal or close the 'joints at the terminals of the several rings, vsaid blocks 4 bein form of studs cylindrical, as in Figs. 1,- 3, 4, and 6, or oblong as in Fig.l 8, it being of the noticed that the edges of opposlte flanges at 5 I registering places are formed with counter'- bores as at 5, in which said 'blocks or seals are freel to.slide in radial direction, and that the outer faces of the latter are formed with passages 6 extending in to the same to receive freely the ends of the rings, so that the rings are -free to expand circumferentially while the joints of their ends areenveloped or embraced by the walls of the studs at the top, rear and bottom of said passages 6. Y

'In the existing spaces in the grooves 2 between the backs of ythe rings 3 andthe adjacent outer portions of the piston head are fitted the springs 7 which bear against the backs of the seals, and -the adjacent portions of the side of the piston head, and so exert pressure on saidseals, and consequently on the rings, whereby the ringsand seals. are both held tightly on the wall o'f the cylinder 8, in which the piston is op erative. TheJ springs are preferably fiat plates of suitable resilient material with' their ends bent into the form of loops 9 whose function is hereinafter described. At'

thel central portions of the springs are' heads 1Q which accord with the cylindrical form -of the seals 4, said heads being placed in contact with the backs of said seals. and seated in the counterbores 5 with said seals. Projecting from the seals at the base of the passages 6 therein are the studs 11, and

the termina-ls of the rings are formed with recesses, shown in dotted lines Fig. 6, to

receive said studs when the terminal por- -tions of the rings are 'fitted in the seals, thus preventing displacement of the rings from; the seals, and as the latter and the heads`10 ofthe springs? are seated in the counterbores 5 .of .the flanges of the piston' head, it is evident that displacement of said springs and seals from -theiroperative .po-

sitions on the piston head' is prevented, the 4terminal portions of th'e 'rings being, however, adapted to. play'inithe passages of the seals due tothe lexpansion and contraction .of the rings, and the W'abbling of the piston. :The loops 9j of -the springs 7 also exert 

